WIZ5500 Ethernet Packets not being sent correctly via MACRAW

Question

Hello, I am using a W5500 to send an ethernet packet to another W5500, I am writing dummy data that I want to be able to see as the dest and source mac address along with a specific sequence of numbers in my payload. When I am sending my data via SN_CR_SEND I see the activity light on the W5500 that is receiving the data blink but nothing is being recognized as a ethernet packet to make it past my filter. I am unsure if what I am writing to the TX buffer is actually being using as the data the should be sent. Is there anyway to confirm that my TX buffer is being filled since currently its FSR always shows as 0 even though I am writing to it using the preexisting functions that came with the Wizchip drivers.

louis · Answer

Hello If transmission is performed normally, you will receive an for the transmission packet from the other party. If you have received the normally, Sn_TX_FSR will automatically increase. If Sn_TX_FSR does not increase, it is because the other party does not send the ACK. Monitor your with the wireshark program. Thank you.